SELL and autosomal dominant cerebellar ataxia: Additionally, SELL, which encodes L-selectin (CD62L), a potential marker for myeloid-biased HSPCs 29, was upregulated in SCA HSPCs, with high expression in HSCs/MPPs, CMP1 and CMP2 and minimal expression in EryP and EoBasoMastP clusters, consistent with a myeloid bias in SCA HSPCs (Figure 2H-I).